This worksheet will challenge your third graders to round numbers and then them. Students will answer multiple choice questions by rounding up or rounding down numbers in the problems provided.

Can your little math whiz add up sums quickly in his head? Teach him to estimate before adding, a great skill to put to use in everyday life!

Adding and subtracting large numbers can sometimes be difficult. Estimating is an easy way to figure out if your answer is close, or if you need to try again.

Estimate the sum in each of these math problems. Challenge your child to round to the nearest hundred first, then add the two rounded numbers.

Kids solve addition problems with three-digit addends to move from bubble to bubble on this second grade math worksheet.

Simple addition problems help your child to understand place values while honing arithmetic skills. A great review of the base 10 system.

Add multi-digit numbers with ease in this colorful second-grade math worksheet!

Practice a visual addition strategy with this second-grade place value worksheet!

Learn to perform addition with three-digit numbers in this essential worksheet!

Practice your addition skills with this inviting second-grade worksheet!